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Test your basic knowledge |
Dairy Cattle And Reproduction
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Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
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study here
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Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. When are steers and heifers weaned from bottle feeding?
6-8 weeks
libido test (BSE)
vagina
butterfat
2. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)
monestrous
feeding a high producing dairy cow
cowper's gland
dairy cattle pregnancy check
3. Can survive ~7 days in cow. vast majority <48 hours
Lutinizing Hormone in females
mare gestation
effects of BST
Sperm survival specs
4. Knife-loose ~1wk of growth. band-loose ~2wks of growth.
retractor muscles
#1 cost in production
normal presentation of the fetus
growth lost from castration methods (knife & band)
5. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
testosterone
penis sizes vs delivering methods
van deferens
seminiferous tubules
6. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)
feeding a high producing dairy cow
estrous
cryptorchid
accessory sex glands
7. Scar tissue plugs up chambers of udder
mastitis
dartos muscle
penis sizes vs delivering methods
sow estrus cycle
8. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
cow estrus cycle
penis sizes vs delivering methods
cryptorchid
butterfat
9. Sperm is produced here
reason for seasonal breeding periods
scrotal circumference (BSE)
seminiferous tubules
seasonally polyestrous
10. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
accessory sex glands
reasons for castration
cow gestation
age and castration
11. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market
normal presentation of the fetus
reasons for castration
castration
Lutinizing Hormone in females
12. Duct through penis that carries sperm and urine
urethra
accessory sex glands
cowper's gland
seminiferous tubules
13. Contains and regulates the temp of the testes for sperm production
hormones
castration
4 major reasons for culling dairy cows
scrotum
14. Birthing process (termination of gestation)
Blood
Parturition
normal presentation of the fetus
seasonally polyestrous
15. Scar tissue plugs up chambers of udder
mastitis
effects of BST
ewe's estrous cycle
4 major reasons for culling dairy cows
16. Why Dairy calves are fed powdered milk.
mare estrus cycle
1. more cost effective - 2. powdered milk is in excess production
sertoli cells
ewe estrus cycle
17. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.
Hard
Lutinizing Hormone in males
uterus
dry-off time in dairy cattle
18. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING
Culls bulls earlier (2 reasons)
Lutinizing Hormone in males
reason for seasonal breeding periods
dartos muscle
19. (male) pushes the testes upward toward the body for warmth or protection
dartos muscle
Dairy calves are removed from cow at birth to...
monestrous
scrotum
20. Superior genes are _______ to multiply
mare gestation
colostrum
Hard
Sperm survival specs
21. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
dairy cattle pregnancy check
elastrator
things to check for in a breeding soundness exam (BSE)
ewe estrus cycle
22. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
dartos muscle
oviducts
effects of estrogen
vagina
23. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm
rectal palpation (BSE)
Bull's fibro-elastic penis
Follical Stimulating in males
semen evaluation (BSE)
24. Male on one pin and female on other side
sperm cell
organs used in spermatogenesis
visual evaluation (BSE)
libido test (BSE)
25. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
Reasons for gestation length being affected
Lutinizing Hormone in males
polyestrous
Follical Stimulating in females
26. (switzerland) 2nd in size and milk production - most muscle -
Brown Swiss Cow
Dairy Cattle Gestation
estrous
Dairy Cattle milking schedule
27. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)
mare ovulation
seasonally polyestrous
castration
visual evaluation (BSE)
28. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
Brown Swiss Cow
things to check for in a breeding soundness exam (BSE)
dartos muscle
mare's estrous cycle
29. Implies the amount of estrogen production
uterus
femininity of a heifer
Follical Stimulating in males
functions of progestrone
30. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total
Jersey Cow
Avg. bull specs
dairy cattle pregnancy check
testis (gonads)
31. 336 days
cryptorchid
mare estrus cycle
mare gestation
retractor muscles
32. Provide nourishment for the developing sperm
Size of cow in relation to the amount of milk produced
feeding a high producing dairy cow
cow gestation
sertoli cells
33. Allows extension of penis without fibro-elastic penis
normal presentation of the fetus
Brown Swiss Cow
dry matter and water
sigmoid flexure
34. 14-19 (17) days
ewe's estrous cycle
ewe estrus cycle
cremaster muscle
dairy cattle pregnancy check
35. Why does estrus happen before ovulation?
sow estrus
reasons for castration
Brown Swiss Cow
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
36. 24 hours before end of estrus cycle
Jersey Cow
Sperm growth rate
cow ovulation
mare ovulation
37. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
cowper's gland
rectal palpation (BSE)
mare estrus
ewe gestation
38. FEED
#1 cost in production
Dairy Cattle Gestation
monorchid
ewe estrus
39. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
age and castration
burdizzo
estrus
sow estrus cycle
40. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.
colostrum
4 major reasons for culling dairy cows
Holstein Cow
vulva
41. Urinary calculi.
sow estrus cycle
Dairy Cattle milking schedule
effects of estrogen
kidney stones also called ________ ___________ can develop in the sigmoid flexure
42. 2 month growth cycle. stored in the epididymis of the bull
Hormones from both the fetus and the mom.
prostaglandin
dry-off time in dairy cattle
Sperm growth rate
43. 16-20 hours
cow estrus
Follical Stimulating in males
dairy cattle pregnancy check
cow estrus cycle
44. 1-2 days
ewe estrus
~1 month
Lutinizing Hormone in males
Lutinizing Hormone in females
45. Milk ~305 days - dry 60 days prior to calving
behavioral signs of estrus
Dairy Cattle milking schedule
retractor muscles
4 major reasons for culling dairy cows
46. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
Mares
dartos muscle
Lutinizing Hormone in males
cremaster muscle
47. What helps regulate spermatogenesis?
ewe estrus
Sperm survival specs
growth lost from castration methods (knife & band)
testosterone
48. Larger the cow - more milk is produced; smaller the cow - less milk is produced
accessory sex glands
Dairy Cattle Gestation
Size of cow in relation to the amount of milk produced
Dairy Cattle milking schedule
49. ~305 days (altough often longer due to breeding difficulties)
leydid or interstitial cells
Hard
cervix
Dairy Cattle Lactation (standard)
50. 1. brain function - 2. blood flow - 3. willing female
age and castration
what has to happen for males for copulation to occur
Parturition
elastrator
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